Vintage Hewlett- Packard (HP) calculator case circa 1970

This is a vintage Hewlett-Packard (HP) calculator case from around the late 1970s. These zippered leatherette pouches were typically included with high-end programmable and scientific calculators of that era. 

Compatible Models

Based on visual evidence and collector listings, this case style was commonly used for the following series:

"E" Series: HP-31E, HP-32E, HP-33E, and HP-38E.

"C" Series: HP-33C, HP-34C, and HP-38C.

Classic Series: Some listings also associate this type of pouch with earlier models like the HP-21. 

Key Characteristics

Material: Usually made of dark brown or black leatherette (vinyl).

Logo: Features the classic embossed HP logo in a tilted square on the front.

Closure: Secured with a perimeter zipper to protect the device during transport.

Dimensions: Approximately 6 inches by 3 inches (15 x 7.5 cm) to fit standard handheld calculators of the period. 

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